If you want a sample of primal fuel, go to your nearest store and open a can of dog food. Sprinkle stevia on top. This replicates the taste pretty accurately.

Hmm.... Got any recommendations for any tasty protein powders?

I want to use it in addition to regular meals to get more calories in. (I'm currently breastfeeding and having trouble keeping weight on, I'm 5'8" and in the past few months my weight has been as low as 103, I'm currently at about 107. I've always been underweight, but now I'm about 10 pounds BELOW my pre-pregnancy weight.)

I've been drinking Carnation Instant Breakfast made with whole milk between meals, and I know that's just "junk food" with a bunch of sugar and crud in it. I want to find a shake mix that's healthy and also quick & easy.

Isopure Zero tastes good, but it's not primal. Sun Warrior Warrior Blend is more primal friendly, but has the mouth feel of wet sand. IZ is a guilty pleasure for me, especially when mixed with yoplait chocolate strawberry smoothie blend (I did say guilty pleasure, right?)
Haven't had it in a couple of months though. If you can set aside some time in the evening, you can cook several meals in advance. I have a little baby myself who I'm nursing, so I can relate to the "I need to eat, but I can't put the baby down to make anything". Best time to do it is at night when LO goes to bed. Take an hour to make a couple dishes that you can grab in the morning and toss in the microwave.

oh, and if Mark (or anyone at MDA) is reading this thread, I'd also be interested in samples of the primal fuel... I'd be more inclined to drop ($whatever it is) on a large container of primal fuel if I could get a little sample packet to try first - even if I had to pay 50 or 99¢ for the packet... just sayin'.